Summary statistics for psi_4_surg_comp_low_est variable in vwhqi_hosp_ahrq data Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- psi_4_~w_est | 1,922 70.87604 19.52963 22.09 139.61 by Jean Roth , jroth@nber.org , 16 Nov 2016